import { fetch } from 'dva';
import { history } from 'umi';
import QProgress from 'qier-progress';
import { Message } from 'antd';

const qprogress = new QProgress();

const codeMessage = {
  200: '服务器成功返回请求的数据。',
  201: '新建或修改数据成功。',
  202: '一个请求已经进入后台排队（异步任务）。',
  204: '删除数据成功。',
  400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
  401: '用户没有权限（令牌、用户名、密码错误）。',
  403: '用户得到授权，但是访问是被禁止的。',
  404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
  406: '请求的格式不可得。',
  410: '请求的资源被永久删除，且不会再得到的。',
  422: '当创建一个对象时，发生一个验证错误。',
  500: '服务器发生错误，请检查服务器。',
  502: '网关错误。',
  503: '服务不可用，服务器暂时过载或维护。',
  504: '网关超时。',
};

function checkStatus (response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  } else if (response.status === 422) {
    return response;
  }

  const errortext = codeMessage[response.status] || response.statusText;
  const error = new Error(errortext);
  error.name = response.status;
  error.response = response;
  throw error;
}

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default function request (url, option) {
  const options = {
    expirys: false,
    ...option,
  };
  /**
   * Produce fingerprints based on url and parameters
   * Maybe url has the same parameters
   */
  const defaultOptions = {
    credentials: 'include',
  };

  const newOptions = {
    ...defaultOptions,
    ...options,
  };
  newOptions.headers = {
    ...newOptions.headers,
  };

  if (newOptions.method === 'POST' || newOptions.method === 'PUT' || newOptions.method === 'DELETE') {
    if (!(newOptions.body instanceof FormData)) {
      newOptions.headers = {
        Accept: 'application/json',
        'Content-Type': 'application/json; charset=utf-8',
        ...newOptions.headers,
      };
      newOptions.body = JSON.stringify(newOptions.body);
    } else {
      newOptions.headers = {
        Accept: 'application/json',
        ...newOptions.headers,
      };
    }
  } else {
    newOptions.headers = {
      Accept: 'application/json',
      'Content-Type': 'application/json; charset=utf-8',
      ...newOptions.headers,
    };
  }

  qprogress.start();

  return fetch(url, newOptions)
    .then(checkStatus)
    .then(response => response.json())
    .then(responseJSON => {
      if (responseJSON) {
        if (responseJSON.code === 901 || responseJSON.code === 902 || responseJSON.code === 903) {
          Message.warn(responseJSON.message);
          PayUtil.payModal();
        } else if (responseJSON.code !== 200) {
          Message.error(responseJSON.message);
          return responseJSON;
        }
      }
      return responseJSON;
    })
    .catch(e => {
      const status = e.name;
      if (status >= 404 && status < 422) {
        history.push('/404');
        return;
      } else {
        history.push('/500');
        return;
      }
    })
    .finally(() => {
      qprogress.finish();
    });
}
